The Hamden Historical Society is a very useful resource for the area and the study of the Ives family and those related to it. As their site says, "The Hamden Historical Society sponsors our room known as the Hamden History Room. The collection in the room is known as the Hamden Historical Society Library. Its purpose is to collect, preserve, and make available historical materials relating directly and significantly to Hamden. This Historical Society Library, inaugurated in 1984, provides a safe, central place to research Hamden’s past. It is the only facility in Hamden dedicated for these purposes. The Library’s holdings are listed on reQuest, a statewide database catalogue of materials in over 130 Connecticut Libraries, and in the National Union Catalogue of Manuscript Collections. The Library is staffed by one part-time professional archivist and assisted by trained volunteer catalogue specialists."
They will do some specific searches for you, as well as let you use their archives.